Introduction - If you have any usage issues, please Google them yourself
The establishment of the cube data model write applications, the use of menus and keyboard combination to move to complete the cube, the ratio and rotation transform, and shows a perspective or parallel projection results. Application has the following functions: 1, through the selected menu, select the cube in the 3D space for parallel projection or perspective projection 2, by way of keyboard keystrokes or mouse movements to complete the pan in the three-dimensional cube ( up and down around the front and rear), scaling (zoom in or out), and the rotation transformation, and transformed projection results, create a dialog box dialog box to set the perspective projection when the projection center, and the axis of rotation of the rotation transformation (can set, respectively, around the x-axis, y-axis and z-axis rotation)